Fair Value Measurements - Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	$ 422.1	$ 499.6
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	351.0	401.6
Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	441.9	519.6
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	351.0	401.6
Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	144.6	157.4
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	169.5	165.9
Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	282.0	352.8
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	171.0	232.0
Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Assets, Fair Value Disclosure, Total	15.4	9.4
Liabilities, Fair Value Disclosure [Abstract]
Liabilities, Fair Value Disclosure, Total	10.5	3.7
Commodity Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	401.8	467.6
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	318.2	378.7
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	144.6	157.4
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	169.5	165.9
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	241.8	300.8
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	138.2	209.1
Commodity Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	15.4	9.4
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	10.5	3.7
Interest Rate Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets		2.9
Interest Rate Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets		0.0
Interest Rate Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets		2.9
Interest Rate Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets		0.0
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	20.3	29.1
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	32.9	22.9
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	0.0	0.0
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	0.0	0.0
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	20.3	29.1
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	32.9	22.9
Foreign Exchange Contract [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Gross derivative assets	0.0	0.0
Liabilities, Fair Value Disclosure [Abstract]
Derivative Liability, Subject to Master Netting Arrangement, before Offset	0.0	0.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	19.8	20.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	0.0	0.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	19.8	20.0
Cash Surrender Value [Member] \| Fair value measured on recurring basis \| Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Investments, Fair Value Disclosure	$ 0.0	$ 0.0

Fair value portion of asset recognized for present right to economic benefit.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair value of financial and nonfinancial obligations.

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